{"id":5535,"date":"2026-06-10T04:22:30","date_gmt":"2026-06-10T04:22:30","guid":{"rendered":"https:\/\/materialparts.com\/smbj18ca\/"},"modified":"2026-06-10T04:22:30","modified_gmt":"2026-06-10T04:22:30","slug":"smbj18ca","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/smbj18ca\/","title":{"rendered":"SMBJ18CA"},"content":{"rendered":"

Productos<\/h2>\n

The SMBJ18CA from Littelfuse is a 600W bidirectional transient voltage suppression (TVS) diode in an SMB (DO-214AA) surface-mount package. The 18 denotes 18V standoff voltage, C denotes bidirectional, A denotes +\/-5% tolerance. With IEC 61000-4-2 ESD protection to +\/-30kV and sub-nanosecond response time, it protects 18V-rated circuits from voltage transients.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Tipo<\/td>\nBidirectional TVS Diode<\/td>\n<\/tr>\n
Standoff Voltage (VRWM)<\/td>\n18V<\/td>\n<\/tr>\n
Breakdown Voltage (VBR)<\/td>\n20.0-22.1V<\/td>\n<\/tr>\n
Clamping Voltage (VC)<\/td>\n29.2V @ IPP=20.5A<\/td>\n<\/tr>\n
Peak Pulse Power<\/td>\n600W (10\/1000us)<\/td>\n<\/tr>\n
Peak Pulse Current<\/td>\n20.5A (10\/1000us)<\/td>\n<\/tr>\n
ESD Rating<\/td>\n+\/-30kV IEC 61000-4-2<\/td>\n<\/tr>\n
Leakage Current<\/td>\n1uA max @ VRWM<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-55 to +150 C (Tj)<\/td>\n<\/tr>\n
Paquete<\/td>\nDO-214AA \/ SMB<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 600W peak pulse power dissipation<\/li>\n
  • Bidirectional protection for AC signals<\/li>\n
  • 18V standoff with 29.2V clamping at peak current<\/li>\n
  • +\/-30kV IEC ESD protection<\/li>\n
  • Sub-nanosecond response time<\/li>\n
  • SMB (DO-214AA) surface-mount package<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • 18V power rail transient protection<\/li>\n
    • CAN bus and RS-485 bus protection<\/li>\n
    • Automotive load dump protection<\/li>\n
    • Industrial 24V bus (de-rating) protection<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SMBJ18CA from Littelfuse is a 600W bidirectional transient voltage suppression (TVS) diode in an SMB (DO-214AA) surface-mount package. The 18 denotes 18V standoff voltage, C denotes bidirectional, A denotes +\/-5% tolerance. With IEC 61000-4-2 ESD protection to +\/-30kV and sub-nanosecond response time, it protects 18V-rated circuits from voltage transients. Key Specifications Type […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,56],"tags":[],"chip_brand":[],"class_list":["post-5535","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-mosfets"],"acf":{"brief_explanation":"18V bidirectional TVS, 600W, DO-214AA","date_code":"","package_case":"DO-214AA \/ SMB (5.9 x 3.6 x 2.3 mm)","in_stock":10852,"datasheet":"https:\/\/www.littelfuse.com\/media\/littelfuse\/datasheets\/tvs_diodes\/littelfuse_tvs_diode_smbj_datasheet.pdf","price":"$0.12 @ 10ku","product_introduction":"The SMBJ18CA from Littelfuse is a 600W bidirectional transient voltage suppression (TVS) diode in an SMB (DO-214AA) surface-mount package. The 18 denotes 18V standoff voltage, C denotes bidirectional, A denotes +\/-5% tolerance. With IEC 61000-4-2 ESD protection to +\/-30kV and sub-nanosecond response time, it protects 18V-rated circuits from voltage transients.","working_principle":"The SMBJ18CA operates as described in the product overview. Key subsystems include the input stage, processing\/gain stage, output stage, and protection circuitry as detailed in the datasheet.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>
      1<\/td>Cathode<\/td>Cathode<\/td>Cathode (stripe band, bidirectional)<\/td><\/tr>
      2<\/td>Anode<\/td>Anode<\/td>Anode (bidirectional)<\/td><\/tr><\/table>","application_scenarios":"
      • 18V power rail transient protection<\/li>
      • CAN bus and RS-485 bus protection<\/li>
      • Automotive load dump protection<\/li>
      • Industrial 24V bus (de-rating) protection<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Package<\/th>Notes<\/th><\/tr>
        SMBJ18A<\/td>Littelfuse<\/td>SMB<\/td>Unidirectional version<\/td><\/tr>
        SMBJ20CA<\/td>Littelfuse<\/td>SMB<\/td>20V standoff, higher voltage<\/td><\/tr>
        SMCJ18CA<\/td>Littelfuse<\/td>SMC<\/td>1500W, larger package<\/td><\/tr>
        P6KE18CA<\/td>Littelfuse<\/td>DO-15<\/td>600W through-hole equivalent<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/5535","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=5535"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/5535\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=5535"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=5535"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=5535"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=5535"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}